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Non-Overhaul Removal and Replacement
Teledyne Continental Motors, Inc.
TM
10-24
IOF-240 Series Engine Maintenance Manual
29 November 2006
10-6.
Engine Cylinder Maintenance
These procedures apply only to instances where an individual engine cylinder is to be
replaced or serviced as a maintenance item and not for engine overhaul. Refer to Chapter
15, Overhaul Inspection and Repair in OH-22 for instructions on replacing and/or
repairing multiple engine cylinders.
10-6.1. Engine Cylinder Removal
Procedure
WARNING
If engine electrical power is not disconnected, a faulty ignition
circuit could allow the engine to start and the propeller to
rotate. Do not stand or place equipment within the arc of the
propeller.
1.
Disconnect electrical power to the engine and turn the Ignition Switch to the OFF
position.
2.
Remove cowling and any airframe supplied accessories in accordance with the
airframe manufacturer's instructions to gain access to the cylinder.
3.
Disconnect the battery in accordance with the airframe manufacturer's instructions.
4.
Disconnect all spark plug leads.
5.
Tag the propeller with the warning, “DO NOT TURN PROPELLER.”
6.
Remove the Fuel Injection, Ignition, Induction and Exhaust System components in
accordance with instructions in Chapter 6, Engine Disassembly in the overhaul
manual and the applicable airframe manufacturer’s instructions.
7.
While removing an engine cylinder, inspect components for wear and conformance to
dimensional criteria. Replace any component based on the following:
a.
Only parts that meet
service limits
may remain in service or be re-used.
b.
If a part fails to meet a service limit tolerance, replace it with a serviceable part.
8.
Refer to Figure 10-12; remove the drain tubes (41). Remove and discard the drain
tube seals (42).
9.
Remove the drain tube fittings (19)
10.
Remove the attaching hardware (30, 31, & 32) for the rocker cover (29) and remove
the rocker cover from the cylinder.
11.
Remove and discard the rocker cover gasket (28).
NOTE: While removing an engine cylinder, inspect components
for wear and conformance to dimensional limits. Replace worn or
out of tolerance components based on the service limits.